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		<div style="display:none;" id="Q1">
			<div class="question1">
				<p>1. (单选题, 4.0 分) What is a class in Java primarily used for?</p>

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				<input type="hidden" value="A" name="answer1" />
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				<input type="radio" id="optionA" name="cQ0" value="A" />
				<label for="optionA">A.
					<pre><h2 style="font-size:20px">
		Defining data types
					</h2></pre>
				</label>
				
				<input type="radio" id="optionB" name="cQ0" value="B" />
				<label for="optionB">B.
					<pre><h2 style="font-size:20px">
		Implementing loops 
					</h2></pre>
				</label>
				
				<input type="radio" id="optionC" name="cQ0" value="C" />
				<label for="option1C">C.
					<pre><h2 style="font-size:20px">
	    Creating variables
					</h2></pre>
				</label>
				
				<input type="radio" id="optionD" name="cQ0" value="D" />
				<label for="optionD">D.
					<pre><h2 style="font-size:20px">
		Handling exceptions
					</h2></pre>
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		<div style="display:none;" id="Q2">
			<div class="question2">
				<p>2. (单选题, 4.0 分) Which keyword is used to define a subclass in Java? </p>

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				<input type="hidden" value="C" name="answer2" />
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				<input type="radio" id="option2A" name="cQ1" value="A" />
				<label for="option2A">A.
					<pre><h2 style="font-size:20px">
		extend
					</h2></pre>
				</label>
				
				<input type="radio" id="option2B" name="cQ1" value="B" />
				<label for="option2B">B.
					<pre><h2 style="font-size:20px">
		import
					</h2></pre>
				</label>
				
				<input type="radio" id="option2C" name="cQ1" value="C">
				<label for="option2C">C.
					<pre><h2 style="font-size:20px">
	    static 				
					</h2></pre>
				</label>
				
				<input type="radio" id="option2D" name="cQ1" value="D">
				<label for="option2D">D.
					<pre><h2 style="font-size:20px">
		super	
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q3">
			<div class="question3">
				<p>3. (单选题, 4.0 分) In Java, a class can be defined as a blueprint for creating:</p>


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				<input type="hidden" value="B" name="answer3" />
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				<input type="radio" id="option3A" name="cQ2" value="A" />
				<label for="option3A">A.
					<pre><h2 style="font-size:20px">
		Constructors
					</h2></pre>
				</label>
				
				<input type="radio" id="option3B" name="cQ2" value="B" />
				<label for="option3B">B.
					<pre><h2 style="font-size:20px">
		Objects 
					</h2></pre>
				</label>
				
				<input type="radio" id="option3C" name="cQ2" value="C">
				<label for="option3C">C.
					<pre><h2 style="font-size:20px">
		Interfaces 
					</h2></pre>
				</label>
				
				<input type="radio" id="option3D" name="cQ2" value="D">
				<label for="option3D">D.
					<pre><h2 style="font-size:20px">
		Methods
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q4">
			<div class="question4">

		
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				<input type="hidden" value="D" name="answer4" />
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				<input type="radio" id="option4A" name="cQ3" value="A" />
				<label for="option4A">A.
					<pre><h2 style="font-size:20px">
		to modify the superclass 
					</h2></pre>
				</label>
				
				<input type="radio" id="option4B" name="cQ3" value="B" />
				<label for="option4B">B.
					<pre><h2 style="font-size:20px">
		to extend the superclass 
					</h2></pre>
				</label>
				
				<input type="radio" id="option4C" name="cQ3" value="C">
				<label for="option4C">C.
					<pre><h2 style="font-size:20px">
		to override the superclass 
					</h2></pre>
				</label>
				
				<input type="radio" id="option4D" name="cQ3" value="D">
				<label for="option4D">D.
					<pre><h2 style="font-size:20px">
		to hide the superclass
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q5">
			<div class="question5">
				<p>5. (单选题, 4.0 分) Which access modifier allows for the widest visibility of a Java class? </p>


			
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				<input type="hidden" value="A" name="answer5" />
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				<input type="radio" id="option5A" name="cQ4" value="A" />
				<label for="option5A">A.
					<pre><h2 style="font-size:20px">
		default                       
					</h2></pre>
				</label>
				
				<input type="radio" id="option5B" name="cQ4" value="B" />
				<label for="option5B">B.
					<pre><h2 style="font-size:20px">
	    protected 
					</h2></pre>
				</label>
				
				<input type="radio" id="option5C" name="cQ4" value="C">
				<label for="option5C">C.
					<pre><h2 style="font-size:20px">
		private 
					</h2></pre>
				</label>
				
				<input type="radio" id="option5D" name="cQ4" value="D">
				<label for="option5D">D.
					<pre><h2 style="font-size:20px">
		public
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q6">
			<div class="question6">
				<p>6. (单选题, 4.0 分) Abstract classes in Java can contain:</p>
			
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				<input type="hidden" value="C" name="answer6" />
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				<input type="radio" id="option6A" name="cQ5" value="A" />
				<label for="option6A">A.
					<pre><h2 style="font-size:20px">
		Concrete methods
					</h2></pre>
				</label>
				
				<input type="radio" id="option6B" name="cQ5" value="B" />
				<label for="option6B">B.
					<pre><h2 style="font-size:20px">
	    Private variables
					</h2></pre>
				</label>
				
				<input type="radio" id="option6C" name="cQ5" value="C">
				<label for="option6C">C.
					<pre><h2 style="font-size:20px">
	    Final methods
					</h2></pre>
				</label>
				
				<input type="radio" id="option6D" name="cQ5" value="D">
				<label for="option6D">D.
					<pre><h2 style="font-size:20px">
		Static constructors
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q7">
			<div class="question7">
				<p>7. (单选题, 4.0 分) Choose the following codes' output:</p>

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				<input type="hidden" value="A" name="answer7" />
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				<input type="radio" id="option7A" name="cQ6" value="A" />
				<label for="option7A">A.
					<pre><h2 style="font-size:20px">
		Ensure class is fully abstract
					</h2></pre>
				</label>
				
				<input type="radio" id="option7B" name="cQ6" value="B" />
				<label for="option7B">B.
					<pre><h2 style="font-size:20px">
	    Restrict class modification 
					</h2></pre>
				</label>
				
				<input type="radio" id="option7C" name="cQ6" value="C">
				<label for="option7C">C.
					<pre><h2 style="font-size:20px">
		Define a static class
					</h2></pre>
				</label>
				
				<input type="radio" id="option7D" name="cQ6" value="D">
				<label for="option7D">D.
					<pre><h2 style="font-size:20px">
		Prevent class instantiation
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q8">
			<div class="question8">
				<p>8. (单选题, 4.0 分) When two classes are in an 'has-a' relationship, they are connected by: </p>

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				<input type="hidden" value="D" name="answer8" />
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				<input type="radio" id="option8A" name="cQ7" value="A" />
				<label for="option8A">A.
					<pre><h2 style="font-size:20px">
		Class extension 
					</h2></pre>
				</label>
				
				<input type="radio" id="option8B" name="cQ7" value="B" />
				<label for="option8B">B.
					<pre><h2 style="font-size:20px">
		Class composition
					</h2></pre>
				</label>
				
				<input type="radio" id="option8C" name="cQ7" value="C">
				<label for="option8C">C.
					<pre><h2 style="font-size:20px">
		Class inheritance
					</h2></pre>
				</label>
				
				<input type="radio" id="option8D" name="cQ7" value="D">
				<label for="option8D">D.
					<pre><h2 style="font-size:20px">
		Class polymorphism
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q9">
			<div class="question9">
				<p>9. (单选题, 4.0 分) Which Java feature allows a class to implement multiple interfaces? </p>


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				<input type="hidden" value="D" name="answer9" />
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				<input type="radio" id="option9A" name="cQ8" value="A" />
				<label for="option9A">A.
					<pre><h2 style="font-size:20px">
		Multiple inheritance
					</h2></pre>
				</label>
				
				<input type="radio" id="option9B" name="cQ8" value="B" />
				<label for="option9B">B.
					<pre><h2 style="font-size:20px">
		Interface aggregation
					</h2></pre>
				</label>

				<input type="radio" id="option9C" name="cQ8" value="C" />
				<label for="option9C">C.
					<pre><h2 style="font-size:20px">
		Class aggregation
					</h2></pre>
				</label>

				<input type="radio" id="option9D" name="cQ8" value="D" />
				<label for="option9D">D.
					<pre><h2 style="font-size:20px">
		Inheritance chaining
					</h2></pre>
				</label>
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		<div style="display:none;" id="Q10">
			<div class="question8">
				<p>10.	What does the term 'polymorphism' refer to in Java classes?</p>


			
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				<input type="hidden" value="B" name="answer10" />
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				<input type="radio" id="option10A" name="cQ9" value="A" />
				<label for="option10A">A.
					<pre><h2 style="font-size:20px">
		Same method name with different parameters 					
					</h2></pre>
				</label>
				
				<input type="radio" id="option10B" name="cQ9" value="B" />
				<label for="option10B">B.
					<pre><h2 style="font-size:20px">
	    Private method access
					</h2></pre>
				</label>
				
				<input type="radio" id="option10C" name="cQ9" value="C">
				<label for="option10C">C.
					<pre><h2 style="font-size:20px">
		Class encapsulation
					</h2></pre>
				</label>
				
				<input type="radio" id="option10D" name="cQ9" value="D">
				<label for="option10D">D.
					<pre><h2 style="font-size:20px">
		Class association
					</h2></pre>
				</label>
			</div>
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